Improvement in machines for expanding and contracting metal



I G. W. FORD.

Machine for Expanding and Contracting Metal.

No. 201,403. Patented March 19,1878! INVENTOR vi BY I ATTORNEYS-N-PETERS, FHOTO-LITHOGRAPHER. WASHING-ON D10.

UNITED STATES PATENT \OFFIQE.

GEORGE w. FORD, OF ELBA, NEW YORK.

IMPROVEMENT lN MACHINES FOR EXPAND ING AND CONTRACTING METAL.

Specification forming part of Letters Patent No. 201,403, dated March19, 1878; application filed January 16, 1878.

To all whom it may concern: v

Be it known that I, GEORGE W. FORD, of Elba, in the county of Geneseeand State of New York, have invented a new and useful Improvement inMachines for Contracting and Expanding Metals, of which the following isa specification:

Figure 1 is a top view of my improved machine arranged for operatingupon tires. Fig. 2 is a longitudinal section of the same, taken throughthe line a: m, Fig. 1. Fig. 3 is a top view of the forward part of thesame arranged for operating upon straight bars. Fig. 4 is a detailsection taken through the line y 3 Fig. 1.

Similar letters of reference indicate corresponding parts.

The object of this invention is to furnish an improved machine forcontracting and expanding tires, bars, and other iron articles, andwhich shall be simple in construction and convenient and effective inuse.

The invention consists in the combination of the exchangeable pivotedblocks and the exchangeable pivoted eccentric or cam wheels, providedwith the arms, and the rods, with the hinged levers, provided with thehandles; in the combination of the pivoted guide-bar with the pivotedblocks and the hinged levers; in the combination of the plates and theirspring with the eccentric or'cam wheels, the blocks, and the hingedlevers, as hereinafter fully described.

A are two levers, which are hinged to each other at or near theirforward ends by a bolt, 0.. The bolt a may extend down into a low bench,upon which the machine may. be placed when being used, to keep the saidmachine in place.

Upon the end parts of the levers A are formed sockets a to receive thehandles B, by which the machine is operated.

To the levers A, at a little distance from their hinged ends, areattached pivots a upon which are placed eccentric-wheels c, the faces ofwhich are toothed, to cause them to grasp the iron to be operated upon.

To the eccentric or cam wheels 0 are rigidly attached arms or levers c,to the ends of which'are pivoted the ends of two rods, H. The other endsof the rods H are pivoted to the end of a rod, I, which extends backinto clamped by the wheels 0 to be operated upon,

and which are placed upon pivots a, attached to the levers A, so thatthe said blocks can be exchanged when required. The blocks D are madewith curved or concaved faces, as shown in Fig. 1, when they are to beused for upsetting or contracting tires or other curved bars, and withstraight faces, as shown in Fig. 3, when they are to be used forupsetting or contracting straight bars; and when the blocks D are to beused for upsetting or contracting curved or straight bars, their innerends may be halved or ton gued and grooved to each other, to keep themin place; and they may be further kept inplace by guide-bar G, one endof which is placed upon a pivot, d, attached to one of the said jaws D,and the other end of which is placed upon a pivot, a attached to one ofthe levers A.

K are two plates, the inner ends of which overlap and are halved to eachother, and are connected by a rivet attached to one end, and passingthrough a slot in the other end. To the outer ends of the plates K areattached the ends of a curved spring, 70, to keep them spread apart inposition for use.

The plates K are designed for use in upsetting light tire, to keep itfrom kinking, and are interposed between the said tire and thecam-wheels 0.

Having thus fully described my invention, I claim as new and desire tosecure by Letters Patent- 1. The combination of the exchangeable pivotedblocks D and the exchangeable pivoted eccentric or cam wheels 0,provided with the arms 0, and the rods H I, with the hinged 1etheir,spring 70 with the eccentric or cam vers A, provided with the handles B,sub, wheels 0, the blocks 1), and thehinged 1estantially as herein shownand described. vers A, substantially as herein shown and de- 2. Thecombination of the pivoted guidescribed. bar G with the pivoted blocks Dand the GEORGE W. FORD.

hinged levers A, substantially as herein shown Witnesses r anddescribed. 'FRANK E. BARR, 3. The combination of the plates K and A. M.WILLIS.

